By the way C++11 has native regex support. On 10 June 2015 at 21:03, Adriano dos Santos Fernandes <adrian...@gmail.com> wrote: > Hi! > > When I created SIMILAR TO predicate, I research for libraries to do the > real work and found no good alternative. > > PgSQL were using (AFAIR) Henry Spencer library, but its (PgSQL) SIMILAR > TO were definitively non SQL standard. > > We needed a library to work with 1, 2 or 4 byte-length characters, > actually their canonical representations of collations. > > So as no suitable library was found, I wrote myself one based on a > CodeProject library. > > This library was simple and recursive, hence it had problems with BLOBs. > Then I managed to recreate it with non-recursive code. > > This library is trick. First of all, I'm not experienced in regex > matching. Bugs on it are difficult to fix, and there are cases which > it's really slow (I didn't compared with others libraries, which may > also be slow with bomb expressions). > > I'd want to replace it with something capable of working as we need, > when customized (not editing their code). > > At a first look, boost.regex is the library who can do it. It's > templatized and works with iterators and traits for customization. It > has integration with ICU and MFC strings, so this is useful to > understand how to customize it. > > Understand and customize it will require time, however. > > And I do not want to lost time if it's going to be objected because: > - It's external code > - It's boost > - It's a library which uses C++ as C++, i.e., uses the std library > - Not only it's internal (like ICU) uses C++, but its interface too > > So what do you think on include such type of library in Firebird? > > > Adriano > > > ------------------------------------------------------------------------------ > Firebird-Devel mailing list, web interface at > https://lists.sourceforge.net/lists/listinfo/firebird-devel
-- Egor Pugin ------------------------------------------------------------------------------ Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
